FacebookTwitterDiggDeliciousStumbleuponGoogle BookmarksRedditNewsvineTechnoratiMixxPinterest
Pin It

b_200_200_16777215_00_images_20150411_131655_Fotor_Collage.jpgI've been fiddling with a #esp8266 and #ds18b20. Came up with a battery powered wifi temperature logger. Currently it broadcasts a UDP packet for every ds18b20 it finds. Its still on the breadboard, along with the ftdi connections. I'll post the more streamlined version. The display on the left is a little python udp listener, which also does a C to F conversion. On the right is a tcpdump of the broadcast packet. But of course the fun didn't stop there.... 



b_200_200_16777215_00_images_20150411_175204_Fotor_Collage.jpgContinuing along with this I discovered this http://tim.jagenberg.info/2015/01/18/low-power-esp8266/ which gets you to a working deep sleep mode, making the project suitable for battery power.   The next step was to free it of the breadboard. I also removed the power led resisitor, for lower power consumpstion. 30 micro amps during sleep time! #lowpower




Then of course the #PiClock needs to show the the temperature.... which happens to be sitting outside on the balcony...